SIC Industry Description

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Industry: 3612—Power, Distribution, and Specialty Transformers

Establishments primarily engaged in manufacturing power, distribution, instrument, and specialty transformers. Establishments primarily engaged in manufacturing radio frequency or voice frequency electronic transformers, coils, or chokes are classified in Industry 3677, and those manufacturing resistance welder transformers are classified in Industry 3548.

Airport lighting transformers	Line voltage regulators
Auto-transformers for switchboards, except telephone switchboards	Luminous tube transformers
Auto-transformers, electric (power transformers)	Machine tool transformers
Ballasts for lighting fixtures	Ratio transformers
Control transformers	Rectifier transformers
Current limiting reactors, electrical	Signaling transformers electric
Distribution transformers electric	Specialty transformers
Doorbell transformers, electric	Street lighting transformers
Electric furnace transformers	Toy transformers
Feeder voltage regulators and boosters (electric transformers)	Transformers, electric power
Fluorescent ballasts (transformers)	Transformers, for electronic meters
Generator voltage regulators electric induction and step type	Transformers, reactor
Ignition transformers	Tripping transformers
Instrument transformers except portable	Vibrators interrupter
Isolation transformers	Voltage regulating transformers electric power
Lighting transformers, fluorescent	Voltage regulators, transmission and distribution
Lighting transformers, street and airport

Codes	Titles	Total Marketable US Businesses
3612	Power, Distribution and Specialty Transformers	831
361200	Power, distribution and specialty transformers	375
36120000	Power, distribution and specialty transformers	375
361201	Power and distribution transformers	326
36120100	Power and distribution transformers	78
36120101	Autotransformers, electric (power transformers)	13
36120102	Control transformers	7
36120103	Current limiting reactors, electrical	15
36120104	Distribution transformers, electric	53
36120105	Feeder voltage boosters (electric transformers)	4
36120106	Feeder voltage regulators (electric transformers)	2
36120107	Generator voltage regulators	11
36120108	Line voltage regulators	12
36120109	Power transformers, electric	71
36120110	Transmission and distribution voltage regulators	15
36120111	Voltage regulating transformers, electric power	31
36120112	Voltage regulators, transmission and distribution	14
361202	Lamp ballasts	20
36120200	Lamp ballasts	0
36120201	Ballasts for lighting fixtures	15
36120202	Fluorescent ballasts	5
361203	Specialty transformers	101
36120300	Specialty transformers	38
36120301	Airport lighting transformers	1
36120302	Autotransformers for switchboards (exc. tele. switchboards)	1
36120303	Doorbell transformers, electric	4
36120304	Electric furnace transformers	2
36120305	Electronic meter transformers	12
36120306	Fluorescent lighting transformers	5
36120307	Ignition transformers, for use on domestic fuel burners	2
36120308	Lighting transformers, fluorescent	11
36120309	Lighting transformers, street and airport	3
36120310	Luminous tube transformers	0
36120311	Machine tool transformers	5
36120313	Reactor transformers	2
36120314	Rectifier transformers	3
36120315	Signaling transformers, electric	7
36120316	Toy transformers	4
36120317	Tripping transformers	1
361299	Power, distribution and specialty transformers, nec	9
36129901	Instrument transformers (except portable)	4
36129902	Saturable reactors	1
36129903	Vibrators, interrupter	4